v3.26.1
Fair Value Measurements - Schedule of Financial Assets and Liabilities that are Measured at Fair Value, on a Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 29, 2026
Dec. 28, 2025
Dec. 29, 2024
Financial Assets      
Financial assets $ 1,134 $ 3,841 $ 3,841
Financial Liabilities      
Financial liabilities 110,044 132,089 102,561
Fair Value, Inputs, Level 1 [Member]      
Financial Assets      
Financial assets 1,134 3,841 3,841
Financial Liabilities      
Financial liabilities 2,070 13,315 862
Fair Value, Inputs, Level 2 [Member]      
Financial Assets      
Financial assets
Financial Liabilities      
Financial liabilities
Fair Value, Inputs, Level 3 [Member]      
Financial Assets      
Financial assets
Financial Liabilities      
Financial liabilities 107,974 118,774 101,699
Restricted cash [Member]      
Financial Assets      
Financial assets 1,134 3,841 3,841
Restricted cash [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Assets      
Financial assets 1,134 3,841 3,841
Restricted cash [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Assets      
Financial assets
Restricted cash [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Assets      
Financial assets
July 2024 Notes derivative liability [Member]      
Financial Liabilities      
Financial liabilities 14,042 [1] 19,604 [1],[2] 13,563 [2]
July 2024 Notes derivative liability [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 14,042 [1] 19,604 [1],[2] 13,563 [2]
July 2024 Notes derivative liability – related parties [Member]      
Financial Liabilities      
Financial liabilities 9,036 [1] 12,615 [1],[2] 21,127 [2]
July 2024 Notes derivative liability – related parties [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability – related parties [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
July 2024 Notes derivative liability – related parties [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 9,036 [1] 12,615 [1],[2] 21,127 [2]
September 2024 Notes derivative liability [Member]      
Financial Liabilities      
Financial liabilities 26,351 [1] 37,930 [1],[2] 55,474 [2]
September 2024 Notes derivative liability [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 26,351 [1] 37,930 [1],[2] 55,474 [2]
September 2024 Notes derivative liability – related parties [Member]      
Financial Liabilities      
Financial liabilities 4,286 [1] 5,870 [1],[2] 6,958 [2]
September 2024 Notes derivative liability – related parties [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability – related parties [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1] [1],[2] [2]
September 2024 Notes derivative liability – related parties [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 4,286 [1] 5,870 [1],[2] 6,958 [2]
July 2025 Note derivative liability– related party [Member]      
Financial Liabilities      
Financial liabilities [1] 2,239 3,246 [2]  
July 2025 Note derivative liability– related party [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1] [2]  
July 2025 Note derivative liability– related party [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1] [2]  
July 2025 Note derivative liability– related party [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities [1] 2,239 3,246 [2]  
September 2025 Notes derivative liability [Member]      
Financial Liabilities      
Financial liabilities [1],[2]   14,756  
September 2025 Notes derivative liability [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1],[2]    
September 2025 Notes derivative liability [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1],[2]    
September 2025 Notes derivative liability [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities [1],[2]   14,756  
November 2025 Note derivative liability – related party [Member]      
Financial Liabilities      
Financial liabilities [1],[2]   1,488  
November 2025 Note derivative liability – related party [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [1],[2]    
November 2025 Note derivative liability – related party [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [1],[2]    
November 2025 Note derivative liability – related party [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities [1],[2]   1,488  
Forward purchase agreement liabilities [Member]      
Financial Liabilities      
Financial liabilities 5,107 3,965 3,494 [3]
Forward purchase agreement liabilities [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities [3]
Forward purchase agreement liabilities [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities [3]
Forward purchase agreement liabilities [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 5,107 3,965 3,494 [3]
SAFE Agreement with related party [Member]      
Financial Liabilities      
Financial liabilities 579 535 384
SAFE Agreement with related party [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities
SAFE Agreement with related party [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities
SAFE Agreement with related party [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 579 535 384
Private placement warrants [Member]      
Financial Liabilities      
Financial liabilities 1,504 1,692 627
Private placement warrants [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities
Private placement warrants [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities
Private placement warrants [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 1,504 1,692 627
Working capital warrants [Member]      
Financial Liabilities      
Financial liabilities 172 194 72
Working capital warrants [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities
Working capital warrants [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities
Working capital warrants [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 172 194 72
Public warrants [Member]      
Financial Liabilities      
Financial liabilities 2,070 2,475 862
Public warrants [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities 2,070 2,475 862
Public warrants [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities
Public warrants [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities
Deferred Sunder Consideration Shares [Member]      
Financial Liabilities      
Financial liabilities 6,331 10,840  
Deferred Sunder Consideration Shares [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities 10,840  
Deferred Sunder Consideration Shares [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities  
Deferred Sunder Consideration Shares [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities 6,331  
Deferred Ambia Consideration Shares [Member]      
Financial Liabilities      
Financial liabilities 13,936 16,879  
Deferred Ambia Consideration Shares [Member] | Fair Value, Inputs, Level 1 [Member]      
Financial Liabilities      
Financial liabilities  
Deferred Ambia Consideration Shares [Member] | Fair Value, Inputs, Level 2 [Member]      
Financial Liabilities      
Financial liabilities  
Deferred Ambia Consideration Shares [Member] | Fair Value, Inputs, Level 3 [Member]      
Financial Liabilities      
Financial liabilities $ 13,936 $ 16,879  
[1] The derivative liabilities are associated with the Company’s outstanding senior unsecured convertible notes with stated interest rates of 7.0% (the “September 2024 Notes” and “September 2025 Notes”) and 12.0% (the “July 2024 Notes”, “July 2025 Note”, “November 2025 Note” and “January 2026 Note”) all of which are defined in Note 9 – Borrowings and Derivative Liabilities.
[2] The derivative liabilities are associated with the Company’s outstanding senior unsecured convertible notes with stated interest rates of 7.0% (the “September 2024 Notes” and “September 2025 Notes”) and 12.0% (the “July 2024 Notes”, “July 2025 Note”, and “November 2025 Note”) all of which are defined in Note 10 – Borrowings and Derivative Liabilities.
[3] Includes $1.3 million due to related parties as of and December 29, 2024.